Message SAP WRF_APC054 - Generic materials &1 and &2 do not have the same characteristics

Diagnosis
You cannot copy prepack articles or purchasing item assignments thatbelong to generic article &V1& to prepack articles or purchasing itemassignments that will belong to generic article &V2& because thesegeneric articles do not share the same characteristics.

System Response
The copy operation is aborted

Procedure
Choose generic articles that are compatible